package edu.nepu.flink.api.sql;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.Table;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;

/**
 * @Date 2024/3/5 21:10
 * @Created by chenshuaijun
 */
public class QueryTable {

    public static void main(String[] args) throws Exception {

        // 首先介绍的是创建表的环境
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env);

        tableEnv.executeSql("CREATE TABLE source ( \n" +
                "    id INT, \n" +
                "    ts BIGINT, \n" +
                "    vc INT\n" +
                ") WITH ( \n" +
                "    'connector' = 'datagen', \n" +
                "    'rows-per-second'='1', \n" +
                "    'fields.id.kind'='random', \n" +
                "    'fields.id.min'='1', \n" +
                "    'fields.id.max'='10', \n" +
                "    'fields.ts.kind'='sequence', \n" +
                "    'fields.ts.start'='1', \n" +
                "    'fields.ts.end'='1000000', \n" +
                "    'fields.vc.kind'='random', \n" +
                "    'fields.vc.min'='1', \n" +
                "    'fields.vc.max'='100'\n" +
                ");\n");
        tableEnv.executeSql("CREATE TABLE sink (\n" +
                "    id INT, \n" +
                "    ts BIGINT, \n" +
                "    vc INT\n" +
                ") WITH (\n" +
                "'connector' = 'print'\n" +
                ");\n");
        tableEnv.executeSql("insert into sink select * from source");


    }
}
